Solutions Engine

Step 2 / Select A Condition

Pipeline Deformation

Excessive geometric deformation of the pipe can result in ovality, dents, wrinkles, etc., that can affect the structural integrity of the pipeline.

Through a wide range of products and services (some requiring the pipeline to be piggable), TDW can help Liquids Transmission operators detect and verify pipeline deformation, assess line integrity, and help execute remedial measures or repairs.



Sensitive, accurate, and verifiable, high-resolution inline inspection (ILI) technology from TDW detects and locates pipeline anomalies, including pipe wall deformations. Whether needing to inspect new construction or existing pipelines, TDW will help Liquids Transmission operators comply with regulatory requirements, prioritize repairs, and ensure system integrity while avoiding multiple inspection runs and unnecessary excavations. 

ILI for deformation detection:

  • KALIPER® 360 (K360) technology Engineered to provide deformation detection in newly constructed and in-service pipelines up to 48 inches in diameter.
  • Deformation (DEF) technology – High resolution tool efficiently detects dents and other minute bore reductions, with accuracy to calculate dent strain and prioritize plain dents.
  • Magnetic flux leakage (MFL) – High resolution technology optimized for liquids pipelines detects and sizes volumetric corrosion features such as metal loss in dents.
  • Gas magnetic flux leakage (GMFL) – High resolution technology optimized for natural gas pipelines detects and sizes volumetric corrosion features such as metal loss in dents.
  • Multiple Dataset (MDS) platform Combines multiple technologies to generate comprehensive, critical information in a single tool run. Utilizes all available technologies to detect and prioritize interactive threats associated with dents.
  • XYZ mapping (XYZ) – Supplies highly accurate location information about every defect reported by pairing global positioning system (GPS) coordinates with inertial mapping.


TDW provides non-destructive in-ditch assessment of pipeline deformation, from localized areas up to entire joint lengths. By incorporating the Liquids Transmission operator’s interaction rules with the TDW mapping capabilities, TDW can provide critical and highly accurate information to help operators address pressing issues and prioritize remediation activities.

  • Digital pit depth gauge Measures external pipeline anomalies, including areas of external pitting and deformations.
  • Automated laser profilometry  Quickly and accurately determines corrosion depths on large external sections of pipeline and may also be used to evaluate deformations. Provides permanent documentation.


In the Liquids Transmission market, where pipeline shutdown often is not an option, TDW offers safe and efficient hot tapping and plugging (HT&P) solutions for a wide array of pipeline defects and maintenance challenges, from dents to corrosion to valve failure.

The HT&P process incorporates a high pressure pipeline fitting, valve, tapping machine, and isolation equipment – all working together to provide a safe and proven isolation solution. Once the area of pipeline that needs work has been safely isolated and evacuated, the line modification can be performed.

TDW isolation technology plays a critical role in this process, and a temporary bypass allows work to be performed without the need to stop product flow. The TDW STOPPLE® Train isolation system, for example, uses double block and bleed technology to help increase efficiency and safety during pipeline modification. This approach to line isolation, which only requires a single pipeline tap, reduces costs associated with fittings, valves, welding and inspection services. The bleed port affixed on the line ensures that any product that bypasses the first seal is contained and evacuated through the bleed port, which helps operators better protect people and the environment.

Because double block and bleed plays such a large role in protecting people, the environment, and communities that a number of regulators in Canada now require it for HT&P repairs. American regulators are likewise moving in that direction.

Whether operators purchase equipment to perform their own HT&P jobs or turn to TDW to execute the service, they can rely on the company’s broad line of equipment and consumables. TDW engineers and manufactures nearly every component needed for an HT&P project, and the company’s tapping and plugging machines are considered the industry standard. To meet regional needs quickly and efficiently, TDW maintains equipment and consumables in service centers around the globe.

TDW can also partner with operators before the work begins, providing consulting services to help them make optimum use of TDW products and services. TDW application engineers are recognized industry experts, ready to assist operators through each project phase – from start to finish. 

TDW also offers RES-Q® Wrap and Steel Repair Sleeves, quick, simple solutions that allow operators to keep their pipeline operational and within code.

To prepare for future challenges, operators have the option of creating an Emergency Pipeline Repair System (EPRS), which equips them to take a proactive approach to pipeline emergencies. Working with the TDW team, operators will have the planning and resources in place to repair and recommission the pipelines — and restore product flow — in the shortest time possible.